In the special prayer, Request to the Lord of All Lineages, it says:

The principal of Akanishta Pure Land, Vajradhara Heruka,
Now appears in this world as an emanation of Heruka
In the form of my root Guru
Who has led me inside the great mandala of the body of Heruka
And granted me the four empowerments to ripen my mental continuum.

Thus I have become a great fortunate one who has the opportunity to accomplish in this life
The Union of Heruka by accomplishing No More Learning, the state of enlightenment.